Quantcast FIGURE   3-66.   Valve   Stem   and   Guide   Clearance

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ARMY TM 9-2815-254-24 AIR  FORCE  TO  3861-94-2 FIGURE   3-66.   Valve   Stem   and   Guide   Clearance (3) If measured values exceed specified limit, valve and valve guide must be replaced as a set. (4) Intake valve stem clearance standard is 0.0015 to 0.0027 in. (0.039 to 0.069 mm), with a limit of 0.008 in. (0.20 mm). Exhaust valve stem clearance standard is 0.0025 to 0.0037 in. (0.084 to 0.093 mm), with a limit of 0.0098 in. (0.25 mm). f. Check valve stem outside diameter as follows: (1) Using a micrometer, measure valve stem OD at three points, refer to FIGURE 3-67. FIGURE  3-67.  Valve  Stem  Outside  Diameter 3-117


 


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